The Tor Browser / file comparison
comparison: browser/extensions/pdfjs/content/web/l10n.js
browser/extensions/pdfjs/content/web/l10n.js
- changeset 0
- 6474c204b198
equal
deleted
inserted
replaced
| -1:000000000000 | 0:d097197aabce |
|---|---|
| 1 /* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */ | |
| 3 /* globals FirefoxCom */ | |
| 4 | |
| 5 'use strict'; | |
| 6 | |
| 7 // Small subset of the webL10n API by Fabien Cazenave for pdf.js extension. | |
| 8 (function(window) { | |
| 9 var gLanguage = ''; | |
| 10 | |
| 11 // fetch an l10n objects | |
| 12 function getL10nData(key) { | |
| 13 var response = FirefoxCom.requestSync('getStrings', key); | |
| 14 var data = JSON.parse(response); | |
| 15 if (!data) { | |
| 16 console.warn('[l10n] #' + key + ' missing for [' + gLanguage + ']'); | |
| 17 } | |
| 18 return data; | |
| 19 } | |
| 20 | |
| 21 // replace {{arguments}} with their values | |
| 22 function substArguments(text, args) { | |
| 23 if (!args) { | |
| 24 return text; | |
| 25 } | |
| 26 return text.replace(/\{\{\s*(\w+)\s*\}\}/g, function(all, name) { | |
| 27 return (name in args ? args[name] : '{{' + name + '}}'); | |
| 28 }); | |
| 29 } | |
| 30 | |
| 31 // translate a string | |
| 32 function translateString(key, args, fallback) { | |
| 33 var i = key.lastIndexOf('.'); | |
| 34 var name, property; | |
| 35 if (i >= 0) { | |
| 36 name = key.substring(0, i); | |
| 37 property = key.substring(i + 1); | |
| 38 } else { | |
| 39 name = key; | |
| 40 property = 'textContent'; | |
| 41 } | |
| 42 var data = getL10nData(name); | |
| 43 var value = (data && data[property]) || fallback; | |
| 44 if (!value) { | |
| 45 return '{{' + key + '}}'; | |
| 46 } | |
| 47 return substArguments(value, args); | |
| 48 } | |
| 49 | |
| 50 // translate an HTML element | |
| 51 function translateElement(element) { | |
| 52 if (!element || !element.dataset) { | |
| 53 return; | |
| 54 } | |
| 55 | |
| 56 // get the related l10n object | |
| 57 var key = element.dataset.l10nId; | |
| 58 var data = getL10nData(key); | |
| 59 if (!data) { | |
| 60 return; | |
| 61 } | |
| 62 | |
| 63 // get arguments (if any) | |
| 64 // TODO: more flexible parser? | |
| 65 var args; | |
| 66 if (element.dataset.l10nArgs) { | |
| 67 try { | |
| 68 args = JSON.parse(element.dataset.l10nArgs); | |
| 69 } catch (e) { | |
| 70 console.warn('[l10n] could not parse arguments for #' + key + ''); | |
| 71 } | |
| 72 } | |
| 73 | |
| 74 // translate element | |
| 75 // TODO: security check? | |
| 76 for (var k in data) { | |
| 77 element[k] = substArguments(data[k], args); | |
| 78 } | |
| 79 } | |
| 80 | |
| 81 | |
| 82 // translate an HTML subtree | |
| 83 function translateFragment(element) { | |
| 84 element = element || document.querySelector('html'); | |
| 85 | |
| 86 // check all translatable children (= w/ a `data-l10n-id' attribute) | |
| 87 var children = element.querySelectorAll('*[data-l10n-id]'); | |
| 88 var elementCount = children.length; | |
| 89 for (var i = 0; i < elementCount; i++) { | |
| 90 translateElement(children[i]); | |
| 91 } | |
| 92 | |
| 93 // translate element itself if necessary | |
| 94 if (element.dataset.l10nId) { | |
| 95 translateElement(element); | |
| 96 } | |
| 97 } | |
| 98 | |
| 99 window.addEventListener('DOMContentLoaded', function() { | |
| 100 gLanguage = FirefoxCom.requestSync('getLocale', null); | |
| 101 | |
| 102 translateFragment(); | |
| 103 | |
| 104 // fire a 'localized' DOM event | |
| 105 var evtObject = document.createEvent('Event'); | |
| 106 evtObject.initEvent('localized', false, false); | |
| 107 evtObject.language = gLanguage; | |
| 108 window.dispatchEvent(evtObject); | |
| 109 }); | |
| 110 | |
| 111 // Public API | |
| 112 document.mozL10n = { | |
| 113 // get a localized string | |
| 114 get: translateString, | |
| 115 | |
| 116 // get the document language | |
| 117 getLanguage: function() { | |
| 118 return gLanguage; | |
| 119 }, | |
| 120 | |
| 121 // get the direction (ltr|rtl) of the current language | |
| 122 getDirection: function() { | |
| 123 // http://www.w3.org/International/questions/qa-scripts | |
| 124 // Arabic, Hebrew, Farsi, Pashto, Urdu | |
| 125 var rtlList = ['ar', 'he', 'fa', 'ps', 'ur']; | |
| 126 return (rtlList.indexOf(gLanguage) >= 0 ? 'rtl' : 'ltr'); | |
| 127 }, | |
| 128 | |
| 129 // translate an element or document fragment | |
| 130 translate: translateFragment | |
| 131 }; | |
| 132 })(this); | |
| 133 |
